ABSTRACT: Human-induced changes profoundly affect deltaic systems. This paper examines the evolution of the Sefidrud Delta, impacted by the Manjil Dam and sediment flushing operation (SFO), through a ...
ABSTRACT: The quimbalete was used in pre-contact Perú and is still used today to process gold. It is a 1 - 2 ton, manually operated, artisanal stone crushing device used to release the gold from the ...